Geometry

Lesson 11: The Pythagorean Theorem

Some Proofs on the Pythagorean Theorem
More on the Theorem
See How It Works
Other Links

Lesson 12: Properties of Triangles and Quadrilaterals

Triangle Medians
Triangle Bisectors
Triangle Altitudes
Types of Quadrilaterals
Properties of Quadrilaterals

Lesson 13: Congruence and Similarity

Congruent Triangles
Congruence and Similarity
Put Together the Congruencies

Lesson 14: Circles

Parts of a Circle
More Parts of a Circle
Arcs
Major vs. Minor
Angles

Lesson 15: The Coordinate Plane (Distance Formula and Midpoint Formula)

Distance Formula
Midpoint Formula